Accident Moderate Severity Resolved

CHP : Traffic Collision with Injuries on CA-4 Eastbound at I-680 N (Martinez). Left lane blocked. Expect delays.

A injury accident was reported on CA-4 E near Contra Costa on September 17, 2026 at 1:40 AM.

Road

CA-4 E

Area

Contra Costa

Address

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Started

Sep 16, 6:40 PM

Last Updated

1 month, 1 week ago

Sep 16, 7:15 PM

Resolved

Sep 17, 1:30 AM

Coordinates

37.9945, -122.0702

Update History

2 observations

CHP : Traffic Collision with Injuries on CA-4 Eastbound at I-680 N (Martinez). Left lane blocked. Expect delays. Sep 16, 7:15 PM

CHP : Traffic Collision with Injuries on CA-4 Eastbound west of I-680 N (Martinez). Left lane blocked. Expect delays. Sep 16, 7:00 PM

Source: 511_sfbay · ID 511.org/1550523 First seen Sep 16, 2026 7:00 PM